Cherokee 140 Loss of Power in Precipitation
Wet electrons/ leak path into the ignition wiring. Does it rapidly get all better when the out of the rain? There's also more moisture, allowing for carburetor icing, which I presume is a possibility though carb heat can also decrease engine power, but if there is ice most of the power will return when it is melted.
The following users liked this post:
I would expect ignition issues to show up as intermittent firing, rough running or a drop similar to the magneto check (could be wrong of course). Carb icing would be one guess, followed by the intake air path as mentioned. I have had a similar event on a C150.
Some airplanes, notably the C 182, will trap water on the front of the air filter in heavy rain. This reduces air flow into the engine and thus power. Selecting carb heat will resolve the issue. In any case trouble shooting any reduction in power in a carbureted engine should always start with selecting carb heat full on.
This reduces air flow into the engine and thus power. Selecting carb heat will resolve the issue. In any case trouble shooting any reduction in power in a carbureted engine should always start with selecting carb heat full on.
The following users liked this post: